Omal Spring Return Aluminium Pneumatic Actuator -Namur Interface

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NEW Omal standard spring return aluminium pneumatic actuator with NAMUR interface which can output torque to 4,000Nm. ISO Mounting flange. Scotch Yoke design. Adjustable end of travel stops. Rolled cylinder. ATEX & SIL3 certified options. Covering product codes: SRN15 through to SR4000

Contact our Technical Sales Engineers for further technical advice or specifications.

The new and updated Omal aluminium standard spring return pneumatic actuator - now with an integrated NAMUR interface and adjustable end of travel stops - from SRN15 and bigger, to 4000Nm.

Torque output from 15Nm to 4000Nm. Torque: the return torque depends on spring action only notwithstanding the air supply. The spring is provided in four different sizes (see table). 

Mounting flange according to EN ISO 5211. ISO: F03 - F04 - F05 - F07 - F10 - F12 - F14 - F16 - F25.

Energized and self-lubricated strips. Less friction between piston and cylinder. It prevents the bonding of the seal to the cylinder even after long periods of inactivity.

Slots, bushes and pins made by steel with hardness higher than 50 HRC. Higher resistance to the forces inside the actuator.

Rolling friction between piston and slot also mean less friction with consequently less wear on the relevant parts.

Scotch yoke design (transforming rotary motion into linear motion using piston and shaft without teeths/gears). Smaller volume/size and less weight than rack and pinion actuators (with the same torque) therefore less space required for installation and consequent savings on the construction sizing of the plant/equipment. Lower air consumption compared to the rack and pinion actuators (-40% air cm3/Nm for Double Acting and -20% air cm3/Nm for Spring Return) therefore less load on the compressor or the possibility of using a smaller compressor's size.

Rolled cylinder. Less wear of the energized ties thanks to the low roughness of the surface (0.15 micron Ra).

In accordance with EN 15714-3

Rotation angle 92° (-1°, +91°C)

The code numbers after the SRN letters always correspond to the breakaway torque in Nm by 5,6 bar air supply.

ATEX version in conformity with directive 2014/34/EU - Available on request

SIL 3 Certified

Temperature: from 0°C to +80°C; from -20°C to +80°C with dry air only. (High Temperature -20°C, +150°C ; Low Temperature -50°C, +60°C special execution)

Air supply: 5,6 bar; maximum 8,4 bar 

Actuating media: filtered dry compressed air, not necessarily lubricated. In case of lubricated air, either non detergent oil or NBR compatible oil, must be used.

New Omal aluminium standard spring return pneumatic actuator is available in the following product codes:

New Omal Aluminium Standard Spring Return Pneumatic Actuator Product Codes:
SRN0015401S SRN0360401S
SRN0015402S SRN0480401S
SRN0030401S SRN0480402S
SRN0030402S SRN0720402S
SRN0053401S SRN0720401S
SRN0060401S SRN0960402S
SRN0090401S SRN0960401S
SRN0120401S SR1440E16D8A
SRN0180401S SR1920E1608A
SRN0240401S SR2880E16D8A
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